/*** coff information for Hitachi SH */ /********************** FILE HEADER **********************/ struct external_filehdr { char f_magic[2]; /* magic number */ char f_nscns[2]; /* number of sections */ char f_timdat[4]; /* time & date stamp */ char f_symptr[4]; /* file pointer to symtab */ char f_nsyms[4]; /* number of symtab entries */ char f_opthdr[2]; /* sizeof(optional hdr) */ char f_flags[2]; /* flags */ }; #define SH_ARCH_MAGIC_BIG 0x0500 #define SH_ARCH_MAGIC_LITTLE 0x0550 /* Little endian SH */ #define SHBADMAG(x) \ (((x).f_magic!=SH_ARCH_MAGIC_BIG) && \ ((x).f_magic!=SH_ARCH_MAGIC_LITTLE)) #define FILHDR struct external_filehdr #define FILHSZ 20 /********************** AOUT "OPTIONAL HEADER" **********************/ typedef struct { char magic[2]; /* type of file */ char vstamp[2]; /* version stamp */ char tsize[4]; /* text size in bytes, padded to FW bdry*/ char dsize[4]; /* initialized data " " */ char bsize[4]; /* uninitialized data " " */ char entry[4]; /* entry pt. */ char text_start[4]; /* base of text used for this file */ char data_start[4]; /* base of data used for this file */ } AOUTHDR; #define AOUTHDRSZ 28 #define AOUTSZ 28 /********************** SECTION HEADER **********************/ struct external_scnhdr { char s_name[8]; /* section name */ char s_paddr[4]; /* physical address, aliased s_nlib */ char s_vaddr[4]; /* virtual address */ char s_size[4]; /* section size */ char s_scnptr[4]; /* file ptr to raw data for section */ char s_relptr[4]; /* file ptr to relocation */ char s_lnnoptr[4]; /* file ptr to line numbers */ char s_nreloc[2]; /* number of relocation entries */ char s_nlnno[2]; /* number of line number entries*/ char s_flags[4]; /* flags */ }; /* * names of "special" sections */ #define _TEXT ".text" #define _DATA ".data" #define _BSS ".bss" #define SCNHDR struct external_scnhdr #define SCNHSZ 40 /********************** LINE NUMBERS **********************/ /* 1 line number entry for every "breakpointable" source line in a section. * Line numbers are grouped on a per function basis; first entry in a function * grouping will have l_lnno = 0 and in place of physical address will be the * symbol table index of the function name. */ struct external_lineno { union { char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ char l_paddr[4]; /* (physical) address of line number */ } l_addr; char l_lnno[4]; /* line number */ }; #define GET_LINENO_LNNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) (ext->l_lnno)); #define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_32(abfd,val, (bfd_byte *) (ext->l_lnno)); #define LINENO struct external_lineno #define LINESZ 8 /********************** SYMBOLS **********************/ #define E_SYMNMLEN 8 /* # characters in a symbol name */ #define E_FILNMLEN 14 /* # characters in a file name */ #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ struct external_syment { union { char e_name[E_SYMNMLEN]; struct { char e_zeroes[4]; char e_offset[4]; } e; } e; char e_value[4]; char e_scnum[2]; char e_type[2]; char e_sclass[1]; char e_numaux[1]; }; #define N_BTMASK (017) #define N_TMASK (060) #define N_BTSHFT (4) #define N_TSHIFT (2) union external_auxent { struct { char x_tagndx[4]; /* str, un, or enum tag indx */ union { struct { char x_lnno[2]; /* declaration line number */ char x_size[2]; /* str/union/array size */ } x_lnsz; char x_fsize[4]; /* size of function */ } x_misc; union { struct { /* if ISFCN, tag, or .bb */ char x_lnnoptr[4]; /* ptr to fcn line # */ char x_endndx[4]; /* entry ndx past block end */ } x_fcn; struct { /* if ISARY, up to 4 dimen. */ char x_dimen[E_DIMNUM][2]; } x_ary; } x_fcnary; char x_tvndx[2]; /* tv index */ } x_sym; union { char x_fname[E_FILNMLEN]; struct { char x_zeroes[4]; char x_offset[4]; } x_n; } x_file; struct { char x_scnlen[4]; /* section length */ char x_nreloc[2]; /* # relocation entries */ char x_nlinno[2]; /* # line numbers */ } x_scn; struct { char x_tvfill[4]; /* tv fill value */ char x_tvlen[2]; /* length of .tv */ char x_tvran[2][2]; /* tv range */ } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ }; #define SYMENT struct external_syment #define SYMESZ 18 #define AUXENT union external_auxent #define AUXESZ 18 /********************** RELOCATION DIRECTIVES **********************/ /* The external reloc has an offset field, because some of the reloc types on the h8 don't have room in the instruction for the entire offset - eg the strange jump and high page addressing modes */ struct external_reloc { char r_vaddr[4]; char r_symndx[4]; char r_offset[4]; char r_type[2]; char r_stuff[2]; }; #define RELOC struct external_reloc #define RELSZ 16 /* SH relocation types. Not all of these are actually used. */ #define R_SH_UNUSED 0 /* only used internally */ #define R_SH_PCREL8 3 /* 8 bit pcrel */ #define R_SH_PCREL16 4 /* 16 bit pcrel */ #define R_SH_HIGH8 5 /* high 8 bits of 24 bit address */ #define R_SH_LOW16 7 /* low 16 bits of 24 bit immediate */ #define R_SH_IMM24 6 /* 24 bit immediate */ #define R_SH_PCDISP8BY4 9 /* PC rel 8 bits *4 +ve */ #define R_SH_PCDISP8BY2 10 /* PC rel 8 bits *2 +ve */ #define R_SH_PCDISP8 11 /* 8 bit branch */ #define R_SH_PCDISP 12 /* 12 bit branch */ #define R_SH_IMM32 14 /* 32 bit immediate */ #define R_SH_IMM8 16 /* 8 bit immediate */ #define R_SH_IMM8BY2 17 /* 8 bit immediate *2 */ #define R_SH_IMM8BY4 18 /* 8 bit immediate *4 */ #define R_SH_IMM4 19 /* 4 bit immediate */ #define R_SH_IMM4BY2 20 /* 4 bit immediate *2 */ #define R_SH_IMM4BY4 21 /* 4 bit immediate *4 */ #define R_SH_PCRELIMM8BY2 22 /* PC rel 8 bits *2 unsigned */ #define R_SH_PCRELIMM8BY4 23 /* PC rel 8 bits *4 unsigned */ #define R_SH_IMM16 24 /* 16 bit immediate */ /* The switch table reloc types are used for relaxing. They are generated for expressions such as .word L1 - L2 The r_offset field holds the difference between the reloc address and L2. */ #define R_SH_SWITCH16 25 /* 16 bit switch table entry */ #define R_SH_SWITCH32 26 /* 16 bit switch table entry */ /* The USES reloc type is used for relaxing. The compiler will generate .uses pseudo-ops when it finds a function call which it can relax. The r_offset field of the USES reloc holds the PC relative offset to the instruction which loads the register used in the function call. */ #define R_SH_USES 27 /* .uses pseudo-op */ /* The COUNT reloc type is used for relaxing. The assembler will generate COUNT relocs for addresses referred to by the register loads associated with USES relocs. The r_offset field of the COUNT reloc holds the number of times the address is references in the object file. */ #define R_SH_COUNT 28 /* Count of constant pool uses */ /* The ALIGN reloc type is used for relaxing. The r_offset field is the power of two to which subsequent portions of the object file must be aligned. */ #define R_SH_ALIGN 29 /* .align pseudo-op */ /* The CODE and DATA reloc types are used for aligning load and store instructions. The assembler will generate a CODE reloc before a block of instructions. It will generate a DATA reloc before data. A section should be processed assuming it contains data, unless a CODE reloc is seen. The only relevant pieces of information in the CODE and DATA relocs are the section and the address. The symbol and offset are meaningless. */ #define R_SH_CODE 30 /* start of code */ #define R_SH_DATA 31 /* start of data */ /* The LABEL reloc type is used for aligning load and store instructions. The assembler will generate a LABEL reloc for each label within a block of instructions. This permits the linker to avoid swapping instructions which are the targets of branches. */ #define R_SH_LABEL 32 /* label */